I need a zencart module for my website where customers can upload an image on the website and add it to the shopping cart and they should be able to see the image in the shopping cart.

After they checkout and finish the order process they should be able to see the uploaded image in their account when ever they login.

The next step would be, we process their images enhance them and upload it back to their account and as soon as the images are enhanced and uploaded back to the account the customer should be notified that their images are ready and the next time the customer logs in to his account he should see the edited and enhanced image we uploaded and at the same time we show him different products he can get the picture on and if the customer likes he can order the products we are offering or he should be able to choose only to download the image by paying us the editing fees.

If the customer does not pay he shouild not be able to download the image and even if he downloads the image there should be a water mark on the image.